Solve the following pairs of simultaneous equations by substitution.
check that your solutions satisfy both equations.
a. y= x – 2 b. y = 2x + 6
y = 3x + 4 y = 4 - 2x c. y = x +1 d. y = x - 2
x + y = 3 3x + y = 14
e. y = 2x + 1 f. y=1 - 2x
x + 2y = 12 x + y = 2

Im literally having a mental breakdown

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.